CN106603881A - Method, device, and system of realizing call routing in IMS network - Google Patents
Method, device, and system of realizing call routing in IMS network Download PDFInfo
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- CN106603881A CN106603881A CN201510681117.5A CN201510681117A CN106603881A CN 106603881 A CN106603881 A CN 106603881A CN 201510681117 A CN201510681117 A CN 201510681117A CN 106603881 A CN106603881 A CN 106603881A
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- China
- Prior art keywords
- called number
- area code
- cscf
- call information
- code
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
- H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
- H04M7/128—Details of addressing, directories or routing tables
Abstract
The invention discloses a method, a device, and a system of realizing call routing in an IMS network. The method comprises steps that a calling side I/S-CSCF is used to send a number query request to an ENUM/DNS; the ENUM/DNS is used for H code separation of a first called number to acquire an area code corresponding to an H code, and is used to add the area code to the first called number to form a second called number, and is used to send the second called number to the calling side I/S-CSCF; the calling side I/S-CSCF is used to replace the first called number in first calling information by the second called number to acquire second calling information, and is used to route the second calling information to a home location according to the area code. Under preconditions of not changing the original IMS network structure and not additionally providing an IMS network element, the ENUM/DNS is additionally provided with a discrimination function, and therefore the H code query is realized, and a calling operator can be connected with a called domain after finishing an own toll network.
Description
Technical field
The present invention relates to the communications field, more particularly to one kind realizes call routing in IMS network
Methods, devices and systems.
Background technology
When in IMS (IP Multimedia Subsystem, IP Multimedia System) network
Caller is with TEL URI (Uniform Resource Identifier, Uniform Resource Identifier) shape
When formula dials the called user for mobile number, called number is+national code+network No.+H codes (4
Position)+ABCD, such as+8613912345678, now caller network and it is not known by called number and returns
Possession, generally requires and calling is gone to into mobile network carries out MAP addressing inquiry or go to solid
Net SHLR (Smart HLR, Smart Home Location Register) carries out code number inquiry.Such as quilt
Non-local user is, then caller to the toll circuit between called needs to go to mobile network and carries out
Dredging, in the case of caller and called network are not same operator, caller operator may need
Increase closing the account for this section of toll circuit.
The content of the invention
The technical problem to be solved in the present invention is how to realize call routing in the ims network.
According to an aspect of the present invention, a kind of method for realizing call routing in IMS network is proposed,
Including：
Calling Side CSCF unit I/S-CSCF to number and domain name system send
Number inquiry is asked, and wherein number inquiry request includes first carried in the first call information
Called number；
The number and domain name system carry out H code divisions to the first called number to obtain
The corresponding area code of H codes is stated, and adds the area code in first called number and form second
Called number, second called number is sent to the Calling Side I/S-CSCF；
The Calling Side I/S-CSCF is replaced the in the first call information by the second called number
One called number, to obtain the second call information, and according to the area code by the second call information
It is routed to ownership place.
In one embodiment, the number and domain name system carry out H to the first called number
Code division is to obtain the corresponding area code of the H codes, and the addition in first called number
The step of area code forms the second called number includes：
Whether the number and domain name system judge first called number comprising area code；
If first called number does not include area code, H is carried out to first called number
Code division is from and inquiring about the area code corresponding to the H codes；
Judge whether the area code is local area code；
If the area code is non-local area code, in first called number area is added
Number formed the second called number.
In one embodiment, if the area code is local area code, to the Calling Side
I/S-CSCF sends inquiry failure, so that the Calling Side I/S-CSCF is on local road
By the first call information.
In one embodiment, if first called number includes area code, execution judges institute
The step of whether state area code be local area code.
In one embodiment, the Calling Side I/S-CSCF is routed to the second call information
The step of ownership place, includes：
The Calling Side I/S-CSCF sends second call information to callee side
I/S-CSCF, so as to areas of the callee side I/S-CSCF in second called number
Number the second call information to be routed to and go out net after the gateway exchange of dialed field place.
In one embodiment, Calling Side I/S-CSCF sends number to number and domain name system
The step of inquiry request, includes：
The Calling Side I/S-CSCF Receiving Agents conversation control function or access gateway control work(
The first message related to calls that can be sent；
The TEL URI in first message related to calls are separated, to judge the first called number energy
It is no to be route according to TEL URI；
If first called number can not be route according to TEL URI, to number and
Domain name system sends number inquiry request.
According to a further aspect in the invention, it is also proposed that one kind realizes call routing in IMS network
Device, including：
Calling Side CSCF unit I/S-CSCF, for number and domain name system
System sends number inquiry request, and wherein number inquiry request includes being carried in the first call information
The first called number；It is additionally operable to that the second called number is replaced first in the first call information
Called number, to obtain the second call information, and according to the area code by the second call information road
By to ownership place；
The number and domain name system, for the first called number is carried out H code divisions from, with
The corresponding area code of the H codes is obtained, and adds the area code shape in first called number
Into the second called number, second called number is sent to the Calling Side I/S-CSCF.
In one embodiment, the number and domain name system are additionally operable to judge that described first is called
Whether number includes area code；If first called number does not include area code, to described first
Called number carries out H code divisions from and inquiring about the area code corresponding to the H codes；Judge the area
Number whether it is local area code；If the area code is non-local area code, in first called number
Add the area code in code and form the second called number.
In one embodiment, if it is local that the number and domain name system are additionally operable to the area code
Area code, then send inquiry failure, so as to the master to the Calling Side I/S-CSCF
Side I/S-CSCF is in the call information of local routing first.
In one embodiment, if the number and domain name system are additionally operable to first called number
Code includes area code, then perform the step of whether judge the area code be local area code.
In one embodiment, the Calling Side I/S-CSCF is additionally operable to the described second calling
Information is sent to callee side I/S-CSCF, so that the callee side I/S-CSCF is according to described
Area code in two called numbers routes to the second call information after the gateway exchange of dialed field place
Go out net.
In one embodiment, the Calling Side I/S-CSCF is additionally operable to Receiving Agent session control
The first message related to calls that function processed or AGCF send；Separate first calling
TEL URI in message, to judge that can the first called number enter walking along the street according to TEL URI
By；If first called number can not be route according to TEL URI, to number and domain
Name system sends number inquiry request.
According to a further aspect in the invention, it is also proposed that one kind realizes call routing in IMS network
System, it is characterised in that including any of the above-described described device and callee side call session control
Functional unit I/S-CSCF processed；
The callee side I/S-CSCF, for the area code in the second call information by second
Call information to be routed to and go out net after the gateway exchange of dialed field place.
Compared with prior art, the present invention passes through Calling Side I/S-CSCF to number and domain name system
System sends number inquiry request, and wherein number inquiry request includes being carried in the first call information
The first called number；Number and domain name system the first called number is carried out H code divisions from, with
The corresponding area code of H codes is obtained, and adds area code in the first called number and form the second called number
Code, the second called number is sent to Calling Side I/S-CSCF；Calling Side I/S-CSCF is by
Two called numbers replace the first called number in the first call information, to obtain the second calling letter
Breath, and the second call information is routed to by ownership place according to area code.Therefore, do not changing original
On the premise of IMS network structure, without newly-increased IMS network elements in the case of,
ENUM/DNS adds discrimination function, you can realize that H codes are inquired about, operator can so as to caller
Access the domain at called place after to cover own long-distance network again.
By referring to the drawings to the detailed description of exemplary embodiment of the invention, the present invention
Further feature and its advantage will be made apparent from.
Description of the drawings
Constitute the Description of Drawings embodiments of the invention of a part for description, and together with saying
Bright book is used to explain the principle of the present invention together.
Referring to the drawings, according to detailed description below, the present invention can be more clearly understood from,
Wherein：
Fig. 1 is one embodiment that the present invention realizes the method for call routing in IMS network
Schematic flow sheet.
Fig. 2 is another embodiment that the present invention realizes the method for call routing in IMS network
Schematic flow sheet.
Fig. 3 is that the present invention realizes that one of the method for call routing is embodied as in IMS network
The schematic flow sheet of example.
Fig. 4 is one embodiment that the present invention realizes the device of call routing in IMS network
Structural representation.
Fig. 5 is one embodiment that the present invention realizes the system of call routing in IMS network
Structural representation.
Fig. 6 is the system network architecture schematic diagram that the present invention realizes call routing in IMS network.
Specific embodiment
Describe the various exemplary embodiments of the present invention in detail now with reference to accompanying drawing.It should be noted that
Arrive：Unless specifically stated otherwise, the part for otherwise illustrating in these embodiments and the phase of step
Arrangement, numerical expression and numerical value are not limited the scope of the invention.
Simultaneously, it should be appreciated that for the ease of description, the chi of the various pieces shown in accompanying drawing
Very little is not to draw according to actual proportionate relationship.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, certainly
Not as to the present invention and its application or any restriction for using.
For technology, method and apparatus may not be made in detail known to person of ordinary skill in the relevant
It is thin to discuss, but in the appropriate case, the technology, method and apparatus should be considered to authorize to be said
A part for bright book.
In all examples shown here and discussion, any occurrence should be construed as merely
Exemplary, not as restriction.Therefore, the other examples of exemplary embodiment can have
There are different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore,
Once being defined in a certain Xiang Yi accompanying drawing, then it need not be carried out in subsequent accompanying drawing
It is discussed further.
To make the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with tool
Body embodiment, and referring to the drawings, the present invention is described in more detail.
Fig. 1 is one embodiment that the present invention realizes the method for call routing in IMS network
Schematic flow sheet.The method is comprised the following steps：
In step 110, Calling Side I/S-CSCF to ENUM/DNS sends number inquiry request
(I-CSCF：Interrogating Call Session Control Function, query call meeting
Words control function；S-CSCF：Serving Call Session Control Function, service
CSCF；ENUM/DNS：E.164Number and DNS E.164, number
Code and domain name system).
Wherein, number inquiry request includes the first called number carried in the first call information
Code.The form of the first called number can be+CC+NDC+H0H1H2H3+ ABCD, wherein,
CC is national code, and NDC is network No., H0H1H2H3For 4 H codes, ABCD is 4
Random code, such as+8613912345678.
In step 120, ENUM/DNS carries out H code divisions to the first called number to obtain
Take the corresponding area code of H codes.
Wherein, whether ENUM/DNS first judges the first called number comprising area code；If first
Called number does not include area code, then H code divisions are carried out to the first called number from and inquiring about H codes
Corresponding area code.If the first called number includes area code, directly perform whether judge area code
For local area code the step of.
In step 130, add area code in the first called number and form the second called number, will
Second called number is sent to Calling Side I/S-CSCF.
For example, the form of the second called number can be+CC+CITYCODE
+NDC+H0H1H2H3The called domain names of+ABCD@.Wherein, ENUM/DNS inquires H
After the corresponding area code of code, judge whether area code is local area code, if area code is non-local area code,
Then add area code in the first called number and form the second called number；If area code is local area code,
Then inquiry failure is sent to Calling Side I/S-CSCF, so that Calling Side I/S-CSCF exists
The call information of local routing first.
In step 140, the second called number is replaced the first calling letter by Calling Side I/S-CSCF
The first called number in breath, to obtain the second call information, and calls according to area code by second
Information router is to ownership place.
For example, Calling Side I/S-CSCF sends the second call information to callee side I/S-CSCF,
So that area codes of the callee side I/S-CSCF in the second called number is by the second call information road
Go out net by the gateway exchange of dialed field place, be ultimately routed to hold the terminal of called number
User.
In this embodiment, Calling Side I/S-CSCF sends number inquiry to ENUM/DNS
Request, wherein number inquiry request includes the first called number carried in the first call information；
ENUM/DNS the first called number is carried out H code divisions from, to obtain the corresponding area code of H codes,
And add area code the second called number of formation in the first called number, the second called number is sent out
Deliver to Calling Side I/S-CSCF；Calling Side I/S-CSCF exhales the second called number replacement first
The first called number in information is, to obtain the second call information, and according to area code by second
Call information is routed to ownership place.Therefore, on the premise of original IMS network structure is not changed,
In the case of without newly-increased IMS network elements, in ENUM/DNS discrimination function is added, you can
Realize that H codes are inquired about, access again after own long-distance network quilt so that caller operator can cover
Cry the domain being located.The present invention meets current IMS existing network routing conditions, can realize IMS
Traffic network distal end networks, and is also applied for providing H code query capabilities for other cross-domain calls.
Fig. 2 is another embodiment that the present invention realizes the method for call routing in IMS network
Schematic flow sheet.The method is comprised the following steps：
In step 201, Calling Side I/S-CSCF receive from this domain P-CSCF/AGCF or
First message related to calls (Invite message) of the person from MGCF.(P-CSCF：Proxy Call
Session Control Function, Proxy Call Session Control Function；AGCF：Access
Gateway Control Function, AGCF；MGCF：Media
Gateway Control Function, multimedia gateway control function).
In step 202, the TEL URI in the first message related to calls are separated, to judge that first is called
Can number be route according to TEL URI.If can be route according to TEL URI,
Execution step 203, otherwise, execution step 204.
In step 203, subsequently it is route in TEL URI modes.Subsequently no longer perform sheet
Other steps of embodiment.
In step 204, to ENUM/DNS number inquiry request is sent.
Wherein, number inquiry request includes the first called number carried in the first call information
Code, such as+8613912345678.
In step 205, whether ENUM/DNS judges the first called number comprising area code.If
Not comprising area code, then execution step 206, otherwise, execution step 207.
In step 206, H code divisions are carried out to the first called number to obtain H codes correspondence
Area code.
In step 207, judge whether area code is local area code.If so, then execution step 208,
Otherwise, execution step 209.
In step 208, inquiry failure is sent to Calling Side I/S-CSCF, to lead
Side I/S-CSCF is in the call information of local routing first.Hereafter the present embodiment is no longer performed
Other steps.
In step 209, add area code in the first called number and form the second called number.
For example, the form of the second called number can be+national code+area code+network No.+H codes
The called domain names of+ABCD@.
In step 210, the second called number is sent to Calling Side I/S-CSCF.
In step 211, the second called number is replaced the first calling letter by Calling Side I/S-CSCF
The first called number in breath, to obtain the second call information, and according to called domain name by second
Call information is sent to callee side I/S-CSCF.
In step 212, area codes of the callee side I/S-CSCF in the second called number is by
Two call informations route to called ownership MGCF and go out net to gateway exchange.
In this embodiment, Calling Side I/S-CSCF sends number inquiry to ENUM/DNS
Request, wherein number inquiry request includes the first called number carried in the first call information；
ENUM/DNS the first called number is carried out H code divisions from, to obtain the corresponding area code of H codes,
And add area code the second called number of formation in the first called number, the second called number is sent out
Deliver to Calling Side I/S-CSCF；Calling Side I/S-CSCF exhales the second called number replacement first
The first called number in information is, to obtain the second call information, and according to area code by second
Call information is routed to ownership place.Therefore, on the premise of original IMS network structure is not changed,
In the case of without newly-increased IMS network elements, in ENUM/DNS discrimination function is added, you can
Realize that H codes are inquired about, access again after own long-distance network quilt so that caller operator can cover
Cry the domain being located.The present invention meets current IMS existing network routing conditions, can realize IMS
Traffic network distal end networks, and is also applied for providing H code query capabilities for other cross-domain calls.
Fig. 3 is that the present invention realizes that one of the method for call routing is embodied as in IMS network
The schematic flow sheet of example.The method is comprised the following steps：
In step 310, P-CSCF/AGCF or MGCF initiates to exhale to caller I-CSCF
It is Invite.
In step 320, caller I-CSCF inquiry ENUM/DNS, the area of called number is obtained
Number.
In step 330, ENUM/DNS return+national codes+area code+network No.+H codes
The called domain names of+ABCD@.
In step 340, Query Result is inserted SIP URI by caller I-CSCF, and according to quilt
Make domain name that Invite is sent to into called I/S-CSCF.
In step 350-360, called I-CSCF is sent to Invite according to area code of the callee called
Ownership MGCF goes out net to gateway exchange.
Concrete call flow can be as shown in Figure 6.
In this embodiment, when in IMS network caller dial in TEL URI forms and called be
During mobile number user, called number is+national code+network No.+H code+ABCD, such as
+ 8613912345678, caller network initiates the inquiry of a H code, after H code poll-finals,
System can plug called ownership LAN area code before network No., then caller network can will be exhaled directly
Dredging to dialed field is made to go to mobile network again.The method is not changing original IMS network
On the premise of structure, without newly-increased IMS network elements in the case of, ENUM/DNS addition
Discrimination function, you can realize that H codes are inquired about, and by differentiating looking into for ENUM/DNS replies
Result is ask, coordinates calling to realize that the distal end of calling networks.
Fig. 4 is one embodiment that the present invention realizes the device of call routing in IMS network
Structural representation.The device includes Calling Side I/S-CSCF (I-CSCF：Interrogating Call
Session Control Function, query call conversation control function；S-CSCF：Serving
Call Session Control Function, service call conversation control function) 410 Hes
ENUM/DNS (E.164Number and DNS E.164, number and domain name system) 420,
Wherein：
Calling Side I/S-CSCF 410, please for sending number inquiry to ENUM/DNS 420
Ask, wherein number inquiry request includes the first called number carried in the first call information；
It is additionally operable to that the second called number is replaced the first called number in the first call information, to obtain
Second call information, and the second call information is routed to by ownership place according to area code.
For example, Calling Side I/S-CSCF sends the second call information to callee side I/S-CSCF,
So that area codes of the callee side I/S-CSCF in the second called number is by the second call information road
Go out net by the gateway exchange of dialed field place, be ultimately routed to hold the terminal of called number
User.
The form of the first called number can be+CC+NDC+H0H1H2H3+ ABCD, its
In, CC is national code, and NDC is network No., H0H1H2H3For 4 H codes, ABCD is
4 random codes, such as+8613912345678.
In addition, I/S-CSCF be additionally operable to receive from this domain P-CSCF/AGCF or from
First message related to calls (Invite message) of MGCF.Separate the TEL in the first message related to calls
URI, to judge that can the first called number be route according to TEL URI, if can be according to
TEL URI are route, and are subsequently route in TEL URI modes.Otherwise, to
ENUM/DNS 420 sends number inquiry request.
ENUM/DNS 420, for H code divisions to be carried out to the first called number to obtain H
The corresponding area code of code, and add area code the second called number of formation in the first called number, will
Second called number is sent to Calling Side I/S-CSCF.
Wherein, whether ENUM/DNS 420 first judges the first called number comprising area code；If
First called number does not include area code, then H code divisions are carried out to the first called number from and inquiring about
Area code corresponding to H codes.If the first called number includes area code, directly perform and judge area code
The step of whether being local area code.
Add area code in the first called number and form the second called number, for example, second is called
The form of number can be+CC+CITYCODE+NDC+H0H1H2H3+ ABCD@are called
Domain name.Wherein, ENUM/DNS 420 is inquired after the corresponding area code of H codes, judges that area code is
It is no for local area code, if area code is non-local area code, in the first called number area code is added
Form the second called number；If area code is local area code, to Calling Side I/S-CSCF 410
Inquiry failure is sent, so that Calling Side I/S-CSCF 410 believes in the calling of local routing first
Breath.
In this embodiment, Calling Side I/S-CSCF sends number and looks into number and domain name system
Request is ask, wherein number inquiry request includes the first called number carried in the first call information
Code；Number and domain name system carry out H code divisions to the first called number to obtain H codes correspondence
Area code, and in the first called number add area code formed the second called number, by the second quilt
Code of calling out the numbers is sent to Calling Side I/S-CSCF；Calling Side I/S-CSCF replaces the second called number
The first called number changed in the first call information, to obtain the second call information, and according to area
Number the second call information is routed to into ownership place.Therefore, original IMS network structure is not being changed
On the premise of, without newly-increased IMS network elements in the case of, ENUM/DNS addition differentiate
Function, you can realize that H codes are inquired about, so that caller operator can cover own long-distance network
Access the domain at called place again afterwards.The present invention meets current IMS existing network routing conditions, can
Realize that IMS traffic networks distal end networks, be also applied for providing H codes for other cross-domain calls and look into
Inquiry ability.
Fig. 5 is one embodiment that the present invention realizes the system of call routing in IMS network
Structural representation.The system is included in IMS network and realizes the device 510 of call routing and called
Side I/S-CSCF 520.
The embodiment as shown in Figure 4 of device 510 of call routing is realized in IMS network.It is called
Side I/S-CSCF 520, for the area code in the second call information by the second call information road
Go out net by the gateway exchange of dialed field place, be ultimately routed to hold the terminal of called number
User.In a particular application, structure that can be as shown in Figure 6 carries out call routing.
In this embodiment, the present invention utilizes IMS standards network element and existing network infrastructure, no
H codes query function in IMS domain is completed by needing IMS domain, and by differentiating
The Query Result that ENUM/DNS is replied, coordinates calling to realize that the distal end of calling networks, to lead
Operator is made to cover the domain for accessing called place after own long-distance network again.Also, this
Invention is applied to H codes inquiry in all IMS domains, is also applied for providing H for other cross-domain calls
Code query capability.
So far, the present invention is described in detail.In order to avoid the design of the masking present invention, do not have
It is described some details known in the field.Those skilled in the art as described above,
Completely it can be appreciated how implementing technical scheme disclosed herein.
The method of the present invention and device may be achieved in many ways.For example, can pass through soft
Part, hardware, firmware or software, hardware, firmware any combinations come realize the present invention side
Method and device.For said sequence the step of methods described merely to illustrating, this
The step of method of invention, is not limited to order described in detail above, unless otherwise especially
Explanation.Additionally, in certain embodiments, also the present invention can be embodied as record in recording medium
In program, these programs include the machine readable instructions for realizing the method according to the invention.
Thus, the record that the present invention also covers storage for performing the program of the method according to the invention is situated between
Matter.
Although being described in detail to some specific embodiments of the present invention by example,
But it should be appreciated by those skilled in the art, above example merely to illustrate, and not
It is to limit the scope of the present invention.It should be appreciated by those skilled in the art, can without departing from
In the case of scope and spirit of the present invention, above example is modified.The model of the present invention
Enclose and be defined by the following claims.
Claims (13)
1. a kind of method for realizing call routing in IMS network, it is characterised in that include：
Calling Side CSCF unit I/S-CSCF to number and domain name system send
Number inquiry is asked, and wherein number inquiry request includes first carried in the first call information
Called number；
The number and domain name system carry out H code divisions to the first called number to obtain
The corresponding area code of H codes is stated, and adds the area code in first called number and form second
Called number, second called number is sent to the Calling Side I/S-CSCF；
The Calling Side I/S-CSCF is replaced the in the first call information by the second called number
One called number, to obtain the second call information, and according to the area code by the second call information
It is routed to ownership place.
2. method according to claim 1, it is characterised in that
The number and domain name system carry out H code divisions to the first called number to obtain
The corresponding area code of H codes is stated, and adds the area code in first called number and form second
The step of called number, includes：
Whether the number and domain name system judge first called number comprising area code；
If first called number does not include area code, H is carried out to first called number
Code division is from and inquiring about the area code corresponding to the H codes；
Judge whether the area code is local area code；
If the area code is non-local area code, in first called number area is added
Number formed the second called number.
3. method according to claim 2, it is characterised in that
If the area code is local area code, sends inquiry to the Calling Side I/S-CSCF and lose
The message for losing, so that the Calling Side I/S-CSCF is in the call information of local routing first.
4. method according to claim 2, it is characterised in that
If first called number includes area code, execution judges whether the area code is local
The step of area code.
5. according to the arbitrary described method of claim 1-4, it is characterised in that
The step of second call information is routed to ownership place by the Calling Side I/S-CSCF is wrapped
Include：
The Calling Side I/S-CSCF sends second call information to callee side
I/S-CSCF, so as to areas of the callee side I/S-CSCF in second called number
Number the second call information to be routed to and go out net after the gateway exchange of dialed field place.
6. method according to claim 5, it is characterised in that
Calling Side I/S-CSCF sends the step of number inquiry is asked to number and domain name system and wraps
Include：
The Calling Side I/S-CSCF Receiving Agents conversation control function or access gateway control work(
The first message related to calls that can be sent；
The TEL URI in first message related to calls are separated, to judge the first called number energy
It is no to be route according to TEL URI；
If first called number can not be route according to TEL URI, to number and
Domain name system sends number inquiry request.
7. a kind of device that call routing is realized in IMS network, it is characterised in that include：
Calling Side CSCF unit I/S-CSCF, for number and domain name system
System sends number inquiry request, and wherein number inquiry request includes being carried in the first call information
The first called number；It is additionally operable to that the second called number is replaced first in the first call information
Called number, to obtain the second call information, and according to the area code by the second call information road
By to ownership place；
The number and domain name system, for the first called number is carried out H code divisions from, with
The corresponding area code of the H codes is obtained, and adds the area code shape in first called number
Into the second called number, second called number is sent to the Calling Side I/S-CSCF.
8. device according to claim 7, it is characterised in that
Whether the number and domain name system are additionally operable to judge first called number comprising area
Number；If first called number does not include area code, H is carried out to first called number
Code division is from and inquiring about the area code corresponding to the H codes；Judge whether the area code is this area
Number；If the area code is non-local area code, in first called number area is added
Number formed the second called number.
9. device according to claim 8, it is characterised in that
If it is local area code that the number and domain name system are additionally operable to the area code, to the master
Side I/S-CSCF is made to send inquiry failure, so that the Calling Side I/S-CSCF is at this
Ground the first call information of route.
10. device according to claim 8, it is characterised in that
If the number and domain name system are additionally operable to first called number comprising area code, hold
Whether row is the step of to judge the area code be local area code.
11. according to the arbitrary described device of claim 7-10, it is characterised in that
The Calling Side I/S-CSCF is additionally operable to second call information be sent to callee side
I/S-CSCF, so as to areas of the callee side I/S-CSCF in second called number
Number the second call information to be routed to and go out net after the gateway exchange of dialed field place.
12. devices according to claim 11, it is characterised in that
The Calling Side I/S-CSCF is additionally operable to Receiving Agent conversation control function or access gateway
The first message related to calls that control function sends；Separate the TEL in first message related to calls
URI, to judge that can the first called number be route according to TEL URI；If described first
Called number can not be route according to TEL URI, then send number to number and domain name system
Inquiry request.
13. a kind of systems for realizing call routing in IMS network, it is characterised in that include
The arbitrary described device of claim 7-12 and callee side CSCF unit
I/S-CSCF；
The callee side I/S-CSCF, for the area code in the second call information by second
Call information to be routed to and go out net after the gateway exchange of dialed field place.
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| CN201510681117.5A CN106603881A (en) | 2015-10-20 | 2015-10-20 | Method, device, and system of realizing call routing in IMS network |
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| CN201510681117.5A CN106603881A (en) | 2015-10-20 | 2015-10-20 | Method, device, and system of realizing call routing in IMS network |
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